Monthly Archives: May 2022

Useful docker commands

Download Docker image

docker pull python

Start up Docker image with just a bash shell as entrypoint

docker run -it –rm –name python python /bin/bash

now you should see something like this :

root@ba17e57ff5e8:/# python -V
Python 3.10.4

Attach to a running docker container

docker exec -it <container-name> bash

Exposing PORT to the host outside the docker

docker run -p 90:80 -it –rm –name python python /bin/bash

Port 80 is the port used INSIDE the Docker
Port 90 is the port on the host (so OUTSIDE)

This means that on the laptop I would do

curl http://localhost:90

and reach the webserver running inside the docker listening on port 80.